Glass articles



(No Model.) 2 Sheets-Sheet 2.

W. M. WALLACE. MANUFACTURING GLASS ARTICLES.

10.278.472 It?. mendlvlay 29,1823.

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,y UIIITI-:Dy ,STATES WILLIAM M; WALLACE,

PATEN T OFFICE.

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"A-NUFACTURING GLASS ARTICLES.

SPECIFICATION formingpar of Letters rat-ent Ivo. avemauatea May 29, 1883.` I Application filed April '28, 1883. (No model.)

To all whomit may concern: I I

-Beit known that I, WM. MnWALLAcE, a citizen of theUnitedvStates,residin g at Bridgeport,V Belmontcounty, Ohio, have invented certain new and useful Improvements in Devices for the Manufacture Glass Articles, of whichthe following, when taken' in connection With the accompanying drawings, forms aclear and exact description.

io Myinvention relatesto the manufacture off glass jelly-tumblers, pickle-jars, and all pressed articles of glass where a screw-joint Ais required or necessary to join the body Yand cover together by having the lid or cover `to interlock I5 on Mthe inside ;.`and to this end my invention consists of a plunger of the required or `desired shape for forming the article, having the portion of itsbdywhichforms-the main. cavity i plain and one solid piece, and another portion 2o provided with projections or depressions for forming-a thread on the inner portion of the article,said part being movableon'the main stem ofthe plunger, so that it canbe'retracted from the4 article prior to the withdrawal of the plunger proper, whereby-thegupper-portion of the article will not bedisturbed, or the screwthreads formed therein will not be distorted or impaired.

My invention consists, further, in forming 3o screw-threads, inclines, lugs, or cavities on the inner upper edgeof a glass article, and a corresponding cover having lugs, screw-threads,

or cavities formed thereon to register with the .screw-threads, lugs, or cavities on the inner side of the main body ofthe article, so that the cap or cover will fit within the cavity` of the article. Y

Referring to the drawings, Eigure 1 is a vertical section showing` the plunger in posi- 4o tion as having formed the article. Fig. 2 is a verticallsection showing the plunger within the mold, but having the movable portion or portions which form the screw-threads orlugs i in anelevated position. Fi g.3 is a perspective view of a jelly-glass. Fig. 4 isa perspective View of the cover. Fig. 5 is a side view of the cover. i

y In the construction of jelly-glasses, picklejars, and vessels of like character made from 5o glass, it is the usual customto form on the outside-of the neck or opening screw-threads,

inclines, lugs, or depressions to register withl screw-threads, lugs, or inclines on the inside ofthe glass cover or lid, thus makingl an article which-has the cover'locking on the outside.n `As a result-of this construction, the increased `areaof the covers, in order to overlap, have to be made stronger in proportion,in order toiresistY the force exerted in the outward direction by the screw or lugs on the neck of/the arti cle, and also to resist the action of the pressure from gases generated in the material stored within the vessel hermetically. Furthermore, the cost oi'` manufacture is greatly increased.,

owing to the large amounts of glass used in making the heavyT caps,and when linished the projecting edge ofy the cap gives an unsightlyand awkward appearance to the article. To obviate all these defects is the object and spirit ofrny invention. I

A indicates the body of the rnold which may he in two or more parts Aor in one piece, having the usual article-iormingcavity therein.` B is the mold-ring of the usual construction. C is the plunger, -which is connected to the operating parts of any suitable press, andI-is operated thereby. VThe `plunger is made in two parts or sections-an upper section, D, and lower section, E. The lower section, E,is made of any suitable or desired form, so that it can be readily withdrawn from the article and its shank is provided with a screw-thread to `receive and-register with corresponding screwthreads on the interior section of D, so that the latter can be moved up and down on the shank. Section D is provided on its periphery with a'screw or series of inclined grooves, I1, which form on the inside ofthe article the inclined ribs or projections o. This order may be reversed, however, so as to form inclined depressions on the inside ofthe article to register with the inclines, lugs,"'or threads formed on the outer periphery of the lid or cover shown. 'The object of havingthe plunger made in two sectionsthe one movable on the shank or stem of the other--isthat it may release itself and ascend the moment it has formed on the glass clean-cut and well-defined screw-threads on the inside of the article, so that a cap or cover of light weight can be used.

` The operation of my device is as follows:

The mold and mold-ring having been placed in proper position on the press, the required quantity of molten glass is introduced into the mold and the plunger brought down, as shown in Fig. 1, the upper section of the plunger having been previously screwed down against the lower section. After the pressure has been applied, and before the glass in the moldis set or hardened, the upper section is screwed up from the article before the lower section is moved, so that the article will not become disturbed when the upper section is being withdrawn. By this means I am enabled to form screw-threads, inclines, lugs, or depressions for the reception of caps or lids fitting on the inner side of the articles produced at the eX- pense of very little time or labor. Ihe upper section of the plunger may be provided with suitable devices for turning it automatically orvotherwise on the threaded stem. Various de- 'vices suitable for this purpose will readily suggest themselves to the skilled mechanic. The cap o r cover for the jars, jelly-glasses, Svc., is provided with screw-threads, grooves, or inclined lugs,on the outer periphery ofthe ange or portion that extends down into the tumbler or jar, so that when the parts are brought together and placed in position avery neat stron g packing-vessel or other article is produced.

I may make the plunger in one piece and extend the screw-threaded stem entirely through the plunger, so that when the plunger is turned on the stem upward sufficient to release the screwthreads, inclines, or projections 'on the exteriorof the upper portion of the plunger from the glass within the mold the article will be held in place in the mold, and be prevented from turning by the pressure. of the lower end of the screw-threaded stem. This construction comes within the scope of my invention, and is shown in dotted lines in Fig. 1.

Having thu's described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. A plunger for pressing glassware, composed of two sections, one of which is movable on the threaded stem of the plunger proper, the movable sections being provided with proper threads or inclines, as set forth, for forming said raised or depressed portions on the inside of the article, as set forth.

2. A plunger for pressing glass articles, hav- -ing a threaded stem and a movable section adapted to be` raised and lowered on said threaded stem, as and for the purpose set forth. 3. A plunger for pressing glassware, com posed of an upper and lower section, the upper section being adapted to be moved up and down on the stem of the lower section, whereby the upper section may be withdrawn from the pressed articles in advance or prior to the withdrawal of the lower section, as set forth.

4. The combination of the mold and moldring with a movable or separable plunger, whereby the article isy held in the mold during the withdrawal ot' aportion of the plunger.A

5. As anew article of manufacture, apressedglass pickle-jar, jelly-glass, or other article having a screw-thread, inclines, or projections raised or depressed, or other fastening devices formed on the inside of the mouth or opening, for the purpose set forth, and a glass cover provided with lockingk devices adapted'to-it and be secured within the opening in thearticle.

WILLIAM M. WALLACE.

Witnesses MARYVBARKER, 0. H. HERRING. 

